How to drain engine coolant?
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How to drain engine coolant?
Im in the process of doing an overhaul on my cooling system and I have a few questions. I am draining all of the coolant out of my Koyo radiator right now, but I'm not sure how to get the rest of the old coolant out of the block. Im trying to get this thing bone dry so I can run mostly water, because of the 100+ degree weather out. My water pump is good so theres no need to replace that, but I'm doing my t-stat. Also my radiator cap is a bit on the old side, so I would like to change that aswell. The only problem with this is when I searched I could not get a straight answer on weather to use a 13 or 16psi cap. Mine has some japanese writing on it and a .9 so I think thats 13 but I'm not sure. Any cooling experts out there?
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A higher Cap rating will prevent the Engine's Cooling system from "purging" when it is overheating..so If the Cap doesn't Let the Pressure out,it will another way,In the form of Blowing a Coolant seal....Draining: I get Lazy,I just Pop a Lower rad hose and Let it Run out..replace..Throw some water in,run a minute and Pop it again..Then Fill with appropriate coolant.
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